POXVIRIDAE AND PICRONAVIRIDAE QUIZ

Hastelloy C is a good material of construction in chemical process industry, since it is

Corrosion resistant to most alkalis, particularly because of its coper content

Relatively inexpensive although it can be fabricated with some difficulty

Light and resists attack by acids

Highly corrosion resistant and is readily fabricated

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ moulding process can not be used for thermoplastic plastics.

Injection

Extrusion

Compression

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

White cast iron is not

Malleable

Strong and hard

Whitish in color

Brittle

TRUE ANSWER : ?
YOUR ANSWER : ?

Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of

Lead lined mild steel

Cast iron

Rubber lined mild steel

Aluminium

TRUE ANSWER : ?
YOUR ANSWER : ?

German silver is an alloy of copper, nickel and

Silver

Lead

Tin

Zinc

TRUE ANSWER : ?
YOUR ANSWER : ?

Addition of __________ in steel can help in increasing the depth of hardness.

Chromium

Nickel

Vanadium

Tungsten

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?

Kel-F and teflon

Graphite

Stainless steel

Monel

TRUE ANSWER : ?
YOUR ANSWER : ?

Softening of hardned steel is done by its

Tempering

Carburising

Normalising

Annealing

TRUE ANSWER : ?
YOUR ANSWER : ?

The fermentor used for the production of ethyl alcohol from molasses is made of

Procelain

Wood

Concrete

Copper bearing steel

TRUE ANSWER : ?
YOUR ANSWER : ?

Cold work tool steel should have

All of these

High toughness

High wear resistance

Poor hardenability

TRUE ANSWER : ?
YOUR ANSWER : ?

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